First the negatives:
Front door does not secure properly without deadbolt and host would not provide deadbolt key during my stay.
The location is located far down a side street. Taxis will question you as to whether to keep going as it's further down the street than most areas that are visited. At night, walking from the main street to this rental, the last 1-2 minutes are in a dark area that has some barely lit sections with very few people. Most people and establishments are closer to the main street and you are well past that point. The establishment is predominantly occupied by Arabic persons and the staff on the first floor repeatedly demonstrated they are not there for customer service. They will generally not assist you either as they are there for people who are renting rooms directly from the hotel versus renting from a condo owner, as is the case for this rental. As I don't know to what extent adult content is allowed in reviews, this location is not a good choice for families based on the various women and men dressed in women's clothes that walk the streets.
Failed to disclose until after booking and right before arrival that one of the Air Conditioning units was not working properly and we had to manually open the unit to activate it versus using the controls. Even with it on, it did not function properly, which caused an issue with how hot Bangkok gets.
Water heater did not work properly. Had to wait for two maintenance visits on two different days before shower in bathroom 1 would provide hot water. Bathroom 2 Bathtub/Shower never worked right and host opted not to repair the issue even though there was more than enough time during our stay, so we were stuck with sharing 1 shower the entire trip.
Roaches are apparently in all rooms throughout the facility, as we noticed them and talked with other guests in the building. I did notice insect powder sprinkled throughout the place.
Kitchen is in rough shape and very outdated. I wouldn't plan on using it other than the refrigerator.
It is a fairly decent walk from the main transit station. (~10 Minutes)
Balcony doors wouldn't stay locked.
Washer had mold.
You'll need to manipulate the curtains past their natural draping point to keep the sun out in the early morning as the default draping lets way too much sun in and lights up the room.
It's normal to wait quite a few minutes for an elevator.
At checkout, You will be asked to leave the keys and security cards in the same unsecure place you picked them up at. (No one meets you for check in or check out. You're responsible for paying for the keys and security cards if they are lost....)
The good:
Floors were a nice stone material and there were plenty of towels.
Large beds.
Multiple 7 Eleven/Convenience Stores in either direction.
Taxis are readily available nearby.